Administrator Guide

ipv6 nd dad attempts
To perform duplicate address detection (DAD) on an interface, configure the number of neighbor solicitation messages that are sent.
Syntax
ipv6 nd dad attempts {number of attempts}
To restore the default value, use the no ipv6 nd dad attempts command.
Parameters
number of
attempts
Enter the number of attempts to be made to detect a duplicate address. The range is
from 0 to 15. Setting the value to 0 disables DAD on the interface.
Default 3 attempts
Command Modes INTERFACE (management interface only)
Command History
This guide is platform-specific. For command information about other platforms, see the relevant DellEMC
Networking OS Command Line Reference Guide.
Version Description
9.10(0.0) Introduced on the S3148.
9.8(2.0) Introduced on the S3100 series.
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.2(1.0) Introduced on the Z9500.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
ipv6 nd disable-reachable-timer
Keep the learnt neighbor discovery entries stateless so that the entries do not time out.
Syntax
ipv6 nd disable-reachable-timer
To restore to default, use the no ipv6 nd disable-reachable-timer command.
Default Disabled
Command Modes INTERFACE
Command History
This guide is platform-specific. For command information about other platforms, see the relevant Dell EMC
Networking OS Command Line Reference Guide.
Version Description
9.11.0.1 Introduced on the S3100 series, S3048–ON, S4048–ON, S4048T-ON, S4810, S4820,
S5000, S6000, S6010–ON, S6000–ON, S6100–ON, Z9100–ON, C9010, Z9500, MXL,
and FN IOM.
ipv6 nd dns-server
Configures Recursive DNS Server (RDNSS) addresses to be distributed via IPv6 router advertisements to an IPv6 device.
Syntax
ipv6 nd dns-server {ipv6-RDNSS-address} {lifetime | infinite}
To remove the IPv6 RDSS configuration, use no ipv6 nd dns-server {ipv6-RDNSS-address}
{lifetime | infinite}
764 IPv6 Basics